A bit more on why crush cans and bull bar design are important:
With an air bag equipped vehicle it is essential that the vehicle's crush rate and, therefore, air bag triggering is not altered when a bull bar is fitted.
In a collaboration with Monash university & Autoliv Australia, ARB has invested heavily, and conducted extensive research and testing to determine various methods of mounting bull bars that truly offer vehicle protection without affecting the crush pulse.
To ensure compatibility we assess each vehicle's frontal crush characteristics, then replicate the crush rate into the design of the bull bar & its mounting system. By using this method we achieve maximum possible vehicle protection without affecting the crash pulse.
Some other manufacturers, of plastic & metal, have determined that by making their bull bars soft or weak enough they won't affect the air bag's triggering. Although we doubt the validity of this method, why would you even consider fitting a frontal protection device that offers little or even no protection at all?
ARB has conducted full frontal vehicle barrier crash tests with Autoliv Australia to verify both the air bag triggering & vehicle crumple rate will react as the original vehicle designer intended."
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